EP 0460714 A3 19920115 - PREPARATION PROCESS FOR POLAR AND APOLAR SUPERPARAMAGNETIC FLUIDS
Title (en)
PREPARATION PROCESS FOR POLAR AND APOLAR SUPERPARAMAGNETIC FLUIDS
Publication
Application
Priority
DE 3619746 A 19860612
Abstract (en)
[origin: US4810401A] Superparamagnetic solid particles of the general formula I MvMnwZnxFeyOz(I) where M is Co and/or Ni, v and w are each from 0 to 0.998, x is from 0.001 to 0.998, y is from 2.001 to 2.998, z is from 3.001 to 4, v+w+x is from 0.002 to 0.999, v+w+x+y is 3, v NOTEQUAL 0 if w=0 and w NOTEQUAL 0 or v=0, polar and nonpolar superparamagnetic liquids which contain the surfactant-coated superparamagnetic solid particles I in the form of a colloidal dispersion in polar or nonpolar liquid media, and processes for the preparation of polar and nonpolar superparamagnetic liquids.
IPC 1-7
IPC 8 full level
C01G 53/00 (2006.01); A61K 49/18 (2006.01); C01G 49/00 (2006.01); C01G 51/00 (2006.01); C09K 9/00 (2006.01); H01F 1/36 (2006.01); H01F 1/37 (2006.01); H01F 1/44 (2006.01)
CPC (source: EP US)
A61K 49/1806 (2013.01 - EP US); A61K 49/1818 (2013.01 - EP US); A61K 49/1842 (2013.01 - EP US); H01F 1/44 (2013.01 - EP US)
Citation (search report)
- [A] US 3531413 A 19700929 - ROSENSWEIG RONALD E
- [AD] US 4430239 A 19840207 - WYMAN JOHN E [US]
Designated contracting state (EPC)
DE FR GB NL
DOCDB simple family (publication)
EP 0460714 A2 19911211; EP 0460714 A3 19920115; EP 0460714 B1 19931208; DE 3619746 A1 19871217; DE 3781593 D1 19921015; DE 3788437 D1 19940120; EP 0249229 A2 19871216; EP 0249229 A3 19900411; EP 0249229 B1 19920909; JP 2636850 B2 19970730; JP S6311525 A 19880119; US 4810401 A 19890307
DOCDB simple family (application)
EP 91113640 A 19870611; DE 3619746 A 19860612; DE 3781593 T 19870611; DE 3788437 T 19870611; EP 87108449 A 19870611; JP 14344687 A 19870610; US 5506687 A 19870528